KR102370663B1 - Electronic attack signal transmission method and device - Google Patents

Abstract

The electronic attack signal transmission method includes: acquiring channel information for each of the objects; generating a beamforming matrix based on channel information; determining the strength of each of the electronic attack signals to be transmitted to each of the objects based on the channel information and the beamforming matrix; and transmitting an electronic attack signal of a determined intensity for each of the objects to each of the objects.

Description

Electronic attack signal transmission method and device

The present disclosure provides a method and apparatus for transmitting an electronic attack signal.

Electronic Warfare (EW) is to subdue the enemy's electromagnetic spectrum and gain an edge on the battlefield, while protecting the electromagnetic spectrum environment in which the allies are operating, and at the same time, it detects and analyzes signals on the electromagnetic spectrum the enemy is operating, and Attacking and disrupting the electromagnetic spectrum environment. Electronic warfare includes Electronic Attack (EA), which interferes with and attacks the enemy's electromagnetic spectrum environment, Electronic Protection (EP), which protects the electromagnetic spectrum environment to ensure smooth battlefield activities of friendly forces, and collects and attacks the enemy's electromagnetic spectrum signal. It is subdivided into Electronic Support (ES) that analyzes and detects threats.

In order to perform an electronic attack on objects operated by the enemy, an electronic attack signal must be transmitted to the objects. On the other hand, since each of the objects has different characteristics, a technique for transmitting an electronic attack signal is required in consideration of the characteristics of each of the objects in performing an electronic attack.

Korean Patent Registration: KR 10-1447027 B1

Korean Patent Publication: KR 10-2013-0019360 A

The technical problem to be solved by the present invention is to provide a method and apparatus for transmitting an electronic attack signal. The technical problem to be achieved by this embodiment is not limited to the technical problems as described above, and other technical problems may be inferred from the following embodiments.

As a technical means for achieving the above-described technical problem, an electronic attack signal transmission method according to an aspect includes: acquiring channel information for each of the objects; generating a beamforming matrix based on the channel information; determining the strength of each electronic attack signal to be transmitted to each of the objects based on the channel information and the beamforming matrix; and transmitting an electronic attack signal of an intensity determined for each of the objects to each of the objects.

The acquiring of the channel information may include: acquiring frequency information and location information for each of the objects; obtaining phase information for each of the objects based on the frequency information and the location information; and obtaining the channel information based on the phase information.

The generating of the beamforming matrix may include generating the beamforming matrix so that interference between the electronic attack signals to be transmitted to each of the objects does not occur.

In the determining of the strength of each of the electronic attack signals, the strength at which the one object receives the electronic attack signal transmitted to one of the objects is maximized, and is transmitted to each of the other objects among the objects. It is possible to provide a method of determining the strength of the electronic attack signal so that the strength at which the single object is received is minimized.

The determining of the strength of each of the electronic attack signals may provide a method of achieving the maximization and the minimization using a Lagrange multiplier method.

The determining of the strength of each of the electronic attack signals may provide a method of determining the strength using an improved iterative multi-level water-filling algorithm.

The method may further include generating a pattern of the electronic attack signal, and determining the strength of each of the electronic attack signal may provide a method of determining the strength based on the pattern.

An electronic attack signal transmission apparatus according to another aspect includes: a channel information acquisition unit for acquiring channel information for each of the objects; a beamforming matrix generator for generating a beamforming matrix based on the channel information; a signal strength determining unit that determines the strength of each of the electronic attack signals to be transmitted to each of the objects based on the channel information and the beamforming matrix; and a transmitter for transmitting an electronic attack signal of an intensity determined for each of the objects to each of the objects.

The channel information obtaining unit obtains frequency information and location information for each of the objects, obtains phase information for each of the objects based on the frequency information and the location information, and obtains the phase information for each of the objects based on the phase information Channel information can be obtained.

The beamforming matrix generator may generate the beamforming matrix so that interference between the electronic attack signals to be transmitted to each of the objects does not occur.

The signal strength determiner is configured to maximize the strength at which the one object receives the electronic attack signal transmitted to one of the objects, and transmit the electronic attack signal transmitted to each of the remaining objects among the objects to the one of the objects. The intensity may be determined such that the intensity received by the object is minimized.

The signal strength determiner may achieve the maximization and the minimization by using a Lagrange multiplier method.

The signal strength determiner may determine the strength using an improved iterative multi-level water-filling algorithm.

The apparatus may further include a signal pattern generator configured to generate a pattern of the electronic attack signal, and the signal strength determiner may determine the strength based on the pattern.

The transmitter may include a multi-antenna including a plurality of transmit antennas for transmitting the electronic attack signal.

A computer-readable recording medium according to another aspect may include a recording medium recording a program for executing the method according to the aspect in a computer.

According to the present invention, in the method for transmitting an electronic attack signal, the power used to transmit the electronic attack signal is efficiently used by determining the strength of each of the electronic attack signal to be transmitted to each of the objects based on information on each of the objects. can be used

Effects of the present invention are not limited to the above-described effects, and effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention pertains from the present specification and accompanying drawings.

1 is a diagram illustrating an electronic attack signal transmitting apparatus and objects according to an exemplary embodiment.
2 is a block diagram illustrating an electronic attack signal transmitting apparatus according to an embodiment.
3 is a view for explaining a method of operating an electronic attack signal transmitting apparatus according to an embodiment.
4 is a flowchart illustrating a method of determining the strength of an electronic attack signal according to an embodiment.
5 is a graph illustrating a beam pattern of an electronic attack signal and the strength of a signal received from an object as an operation result of the electronic attack signal transmitting apparatus according to an exemplary embodiment.
6 is a graph illustrating a spectrum of a signal received from an object as a result of an operation of the electronic attack signal transmitting apparatus according to an exemplary embodiment.
7 is a flowchart illustrating a method for transmitting an electronic attack signal according to an embodiment.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

Terms used in the embodiments are selected as currently widely used general terms as possible while considering functions in the present invention, but may vary depending on intentions or precedents of those of ordinary skill in the art, emergence of new technologies, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term.

In the entire specification, when a part "includes" a certain element, this means that other elements may be further included, rather than excluding other elements, unless otherwise stated. In addition, terms such as “…unit” and “…module” described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software, or may be implemented as a combination of hardware and software.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

Also, terms including an ordinal number such as 'first' or 'second' used in this specification may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a diagram illustrating an electronic attack signal transmitting apparatus and objects according to an exemplary embodiment.

Referring to FIG. 1 , the electronic attack signal transmitting apparatus 100 includes multiple antennas, and the electronic attack signal transmitting apparatus 100 may transmit an electronic attack signal to each of a plurality of objects 110 .

The electronic attack signal transmitting apparatus 100 may detect and analyze a signal on an electromagnetic spectrum operated by an enemy, and may attack or disturb an environment of an electromagnetic spectrum operated by the enemy. The electronic attack signal transmitting apparatus 100 may transmit an electronic attack signal for attacking an environment of an electromagnetic spectrum operated by an enemy to the objects 110 using multiple antennas. The objects 110 may correspond to, for example, multiple antennas operated by an enemy. The electronic attack signal may include, for example, an electronic jamming signal or an electronic deception signal.

The electronic attack signal transmitting apparatus 100 may transmit the electronic attack signal to the objects 110 in order not to be exposed from the objects 110 . The electronic attack signal transmitting apparatus 100 may individually determine the strength of the electronic attack signal to be transmitted to each of the objects 110 in order to neutralize the signal transmitted from the objects 110 . For example, the electronic attack signal transmitting apparatus 100 is an electronic attack signal to be transmitted to each of the objects 110 based on the position of each of the objects 110 and the strength of a signal transmitted from each of the objects 110 . can be determined individually. The strength of the electronic attack signal may correspond to, for example, the amount of power allocated to transmit the electronic attack signal.

The electronic attack signal transmitting apparatus 100 may utilize multiple input multiple output (MIMO) technology to transmit the electronic attack signal to the objects 110 . The multiple input/output technology is a technology that can be applied to multiple antennas, and is a technology that enables multiple input/output. The multiple input/output technology can improve the transmission efficiency of signals by breaking away from transmitting and receiving signals using only a single transmit antenna and a single receive antenna and enable transmitting and receiving signals using a plurality of transmit antennas and a plurality of receive antennas. can The multiple input/output technology may be applied to multiple antennas (a plurality of transmit antennas) of the electronic attack signal transmitting apparatus 100 and to the target objects 110 (a plurality of receive antennas) to be attacked.

2 is a block diagram illustrating an electronic attack signal transmitting apparatus according to an embodiment.

Referring to FIG. 2 , the electronic attack signal transmitting apparatus 100 may include a channel information obtaining unit 210 , a beamforming matrix generating unit 220 , a signal strength determining unit 230 , and a transmitting unit 240 .

Only the components related to the present embodiments are shown in the electronic attack signal transmitting apparatus 100 shown in FIG. 2 . Accordingly, it is apparent to those skilled in the art that the electronic attack signal transmitting apparatus 100 may further include other general-purpose components in addition to the components shown in FIG. 2 .

The electronic attack signal transmission apparatus 100 generates a channel information acquisition unit 210 for acquiring information on the objects 110 , and a beamforming matrix for determining characteristics of an electronic attack signal to be transmitted to the objects 110 . It may include the unit 220 , the signal strength determiner 230 , and the transmitter 240 for transmitting the electronic attack signal to the objects 110 .

The channel information acquisition unit 210 may acquire channel information for each of the objects 110 . The channel information obtaining unit 210 may obtain frequency information and location information for each of the objects 110 in order to obtain channel information for each of the objects 110 . The location information may include elevation angle information and azimuth angle information about the objects 110 . The channel information acquisition unit 210 may acquire phase information for each of the objects 110 based on the acquired frequency information and location information. The channel information acquisition unit 210 may acquire channel information for each of the objects 110 based on the acquired phase information. The phase information may correspond to, for example, a phase vector.

The channel information obtainer 210 may determine a phase vector for each of the objects 110 based on frequency information and location information. The channel information obtaining unit 210 may obtain a phase information matrix for the objects 110 in which phase vectors for each of the objects 110 are sequentially listed. The channel information acquisition unit 210 may acquire channel information for each of the objects 110 based on the phase information matrix.

The channel information acquisition unit 210 may acquire information on the strength of the electronic attack signal required for each of the objects 110 . The information on the strength of the electronic attack signal required for each of the objects 110 is the amount of signal attenuation according to the distance to each of the electronic attack equipment and the objects 110 and the electronic attack signal capable of incapacitating each of the objects 110 . It can be determined based on the intensity.

The beamforming matrix generator 220 may generate a beamforming matrix based on the channel information acquired by the channel information acquirer 210 . For example, the beamforming matrix generator 220 may generate the beamforming matrix so that interference between the electronic attack signals to be transmitted to each of the objects 110 does not occur. A specific method for the beamforming matrix generator 220 to generate the beamforming matrix will be described later with reference to FIG. 3 .

The signal strength determining unit 230 is an electronic attack signal to be transmitted to each of the objects 110 based on the channel information obtained by the channel information obtaining unit 210 and the beamforming matrix generated by the beamforming matrix generating unit 220 . Each intensity can be determined. The signal strength determiner 230 transmits to each of the objects 110 by using an iterative optimization algorithm based on an initial value in which the strength information of the electronic attack signal required for each of the objects 110 is reflected. It is possible to determine the strength of each electronic attack signal to be.

The signal pattern generator may generate a pattern of the electronic attack signal. The signal strength determiner 230 may determine the strength of each electronic attack signal to be transmitted to each of the objects 110 based on the pattern of the electronic attack signal generated by the signal pattern generator.

The signal strength determiner 230 transmits the electronic attack signal 101 transmitted to one of the objects 110 to one object 111 so that the strength at which the one object 111 receives the signal is maximized. It is possible to determine the strength of the transmitted electronic attack signal (101). In addition, the signal strength determiner 230 is an electronic attack signal transmitted to each of the remaining objects such that the strength at which one object 111 receives the electronic attack signal transmitted to each of the remaining objects among the objects 110 is minimized. can determine the strength of

The signal strength determiner 230 may determine the strength of each of the electronic attack signals to be transmitted to each of the objects 110 by using the Lagrange multiplier method. For example, the signal strength determiner 230 maximizes the reception intensity of the electronic attack signal 101 to be received by one object 111 by using the Lagrange multiplier method to one object 111, It can be achieved to minimize the reception intensity of the remaining electronic attack signal to one object 111 . Also, the signal strength determiner 230 may determine the strength of each of the electronic attack signals to be transmitted to each of the objects 110 by using an improved iterative multi-level water-filling algorithm.

A detailed method for the signal strength determiner 230 to determine the strength of each of the electronic attack signals to be transmitted to each of the objects 110 will be described later with reference to FIG. 3 .

The transmitter 240 may include multiple antennas (eg, a plurality of transmit antennas) for transmitting an electronic attack signal. The transmitter 240 may transmit an electronic attack signal of an intensity determined for each of the objects 110 to each of the objects 110 . The transmitter 240 may perform beamforming as an example of a method of transmitting an electronic attack signal to the objects 110 .

Beamforming is a technique for transmitting a high-power signal transmitted from multiple antennas to a target point. Beamforming is a technique for increasing a Signal to Interference plus Noise Ratio (SINR) by determining a weight applied to a signal to be transmitted based on channel information of an object. The transmitter 240 may increase a ratio of an electronic attack signal to a signal transmitted from the object or a Jamming to Signal Ratio (JSR) by performing beamforming.

In an embodiment, the channel information obtaining unit 210 , the beamforming matrix generating unit 220 , the signal pattern generating unit and the signal strength determining unit 230 may be included in the processor. The processor may be implemented as an array of a plurality of logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory in which a program executable in the microprocessor is stored. In addition, it can be understood by those skilled in the art that the present embodiment may be implemented in other types of hardware.

3 is a view for explaining a method of operating an electronic attack signal transmitting apparatus according to an embodiment.

Referring to FIG. 3 , the electronic attack signal transmitting apparatus 100 may include a channel information obtaining unit 210 , a beamforming matrix generating unit 220 , a signal strength determining unit 230 , and a transmitting unit 240 . The channel information obtaining unit 210 of FIG. 3 , the beamforming matrix generating unit 220 , the signal strength determining unit 230 and the transmitting unit 240 are the channel information obtaining unit 210 of FIG. 2 , the beamforming matrix generating unit ( 220 ), the signal strength determiner 230 and the transmitter 240 . Accordingly, overlapping descriptions are omitted.

Only the components related to the present embodiments are shown in the electronic attack signal transmitting apparatus 100 shown in FIG. 3 . Accordingly, it is apparent to those skilled in the art that the electronic attack signal transmitting apparatus 100 may further include other general-purpose components in addition to the components illustrated in FIG. 3 .

The electronic attack signal transmitted from the electronic attack signal transmitting device 100 is a vector of a signal received by the objects 110 is r, the number of the objects 110 is M, and the number of transmission antennas included in the transmitter 240 is r. When the number is N, r can be expressed as in Equation 1 below.

r is an M×1 vector received by the M objects 110 , and the M×1 reception signal vector r _s , the M×1 electronic attack signal vector r _j , and the receivers of the M objects 110 . It can be determined as the sum of the noise signal vector n of M×1 composed of the noise signal.

The reception signal vector r _s for the M objects 110 is a signal transmitted by the objects 110 is reflected by an unspecified object and is received again by the objects 110 , and the M objects 110 and It may be determined as the product of an M×N channel matrix H between unspecified objects and a signal vector s of M×1 reflected from the object.

The vector r _j for the electronic attack signal received by the M objects 110 by transmitting the electronic attack signal using the N transmission antennas in the electronic attack signal transmitting apparatus 100 is obtained by the channel information obtaining unit 210 . An M×N channel matrix G between the M objects 110 and N transmission antennas generated, and an N×M beamforming matrix W generated by the beamforming matrix generator 220 using the channel matrix G , M×M transmission intensity matrix P generated by using the channel matrix G and the transmission beamforming matrix W for optimal power allocation in the signal strength determining unit 230 and M×1 electrons generated by the signal pattern generation unit It can be determined as the product of the attack signal vector x.

M between the M objects 110 and the N transmission antennas generated by the channel information acquisition unit 210 of the electronic attack signal transmission apparatus 100 based on frequency information and location information of the objects 110 . A channel matrix G of ×N may be composed of a phase vector g _k of 1×N determined by a frequency difference and a position difference between the k-th object included in the objects 110 and the N transmit antennas. The N×M beamforming matrix W generated by the beamforming matrix generator 220 is generated based on the channel matrix G, and may be composed of an N×1 beamforming vector w _k for the k-th object.

The beamforming vector w _k of N×1 is a vector to which Minimum Mean-Square Error (MMSE), Zero-Forcing (ZF), and Maximum Ratio Transmission (MRT) are applied. It can be determined as in Equation (2).

With respect to the vector r, the vector r _k of the signal received by the k-th object may be determined as in Equation 3 below.

의 세기를 최대화하고 나머지 전자공격 신호

의 세기를 최소화할 수 있다. 신호 세기 결정부(230)는 M개의 대상체들(110) 모두에 대하여 상기 조건이 만족되도록 전자공격 신호의 세기를 결정할 수 있다. 이는 아래의 수학식 4를 해결함으로써 달성될 수 있다.In order to effectively transmit the electronic attack signal to the k-th object using limited frequency resources and power, the signal strength determiner 230 is configured to receive the k-th electronic attack signal received by the k-th object.

Maximize the strength of the remaining electronic attack signal

strength can be minimized. The signal strength determiner 230 may determine the strength of the electronic attack signal so that the above condition is satisfied for all of the M objects 110 . This can be achieved by solving Equation 4 below.

The sum of power required to transmit the electronic attack signal to the objects 110 is less than the maximum transmission power value P _T of the electronic attack signal transmitting device 100 and to transmit the electronic attack signal to each of the objects 110 . When the required power values are all positive numbers, the signal strength determiner 230 may utilize an optimization technique to maximize the channel capacity of the electronic attack signal transmission device 100 . The signal strength determiner 230 may utilize an optimization technique including constraints on the objects 110 using the Lagrangian multiplier method. It can be expressed as Equation 5 below.

The signal strength determiner 230 uses a Karush-Kuhn-Tucker (KKT) condition to solve the Lagrangian multiplier method, and calculates the variables p _m and Lagrangian Multiplier μ that satisfy the condition for differentiating Equation 5 to 0 A value that maximizes the function of Equation 4 can be obtained. The condition for differentiating Equation 5 to be 0 can be expressed as Equation 6 above.

Equation 6 is an optimization problem using an iterative water-filling algorithm and can be solved as in Equation 7.

값으로 할당된다. 따라서 신호 세기 결정부(230)는 대상체들(110) 각각에 송신되는 전자공격 신호의 세기를 개별적으로 결정하기 위해, 개선된 iterative multi-level water-filling algorithm을 이용할 수 있다. 이는 수학식 8과 같이 나타날 수 있다.However, when Equation 6 is solved using Equation 7, the power p _m for transmitting the electronic attack signal to the objects 110 is the same.

assigned by value. Accordingly, the signal strength determiner 230 may use an improved iterative multi-level water-filling algorithm to individually determine the strength of the electronic attack signal transmitted to each of the objects 110 . This can be expressed as Equation (8).

은 M개의 대상체들(110) 중에서 m번째 대상체에 송신되는 전자공격 신호에 대해 할당되는 전력의 상한 값으로 정의될 수 있다. 신호 세기 결정부(230)는, 수학식 8을 이용하여 수학식 9를 만족시킴으로써 대상체들(110) 각각에 송신되는 전자공격 신호의 세기를 개별적으로 결정할 수 있다.in Equation 8

may be defined as an upper limit value of power allocated to an electronic attack signal transmitted to an m-th object among the M objects 110 . The signal strength determiner 230 may individually determine the strength of the electronic attack signal transmitted to each of the objects 110 by satisfying Equation 9 using Equation 8.

The process of solving the optimization problem using the Lagrangian Multiplier Method to determine the power p _m allocated to the electronic attack signal transmitted to the mth object is solved using the improved iterative multi-level water-filling algorithm. 4 as a flowchart.

After the strength of the electronic attack signal is determined, data related thereto may be transmitted to the electronic attack signal IQ data generator. The electronic attack signal IQ data generator may generate IQ data based on data related to the strength of the received electronic attack signal. The IF signal converter includes a Digital-Up-Convertor, and can convert IQ data into an IF signal. The D/A converter includes a D/A converter and may convert an IF signal into an RF signal. The high-power amplifier includes a high-power amplifier, amplifies the RF signal, and transmits the amplified signal to the transmitter. The transmitter may receive a signal from the high-power amplifier and transmit an electronic attack signal having a determined strength.

4 is a flowchart illustrating a method of determining the strength of an electronic attack signal according to an embodiment.

Referring to FIG. 4 , the method of determining the strength of the electronic attack signal includes steps processed in time series by the electronic attack signal transmitting apparatus 100 according to the embodiment of FIG. 3 . Therefore, it can be seen that the above-described contents of the electronic attack signal transmitting apparatus 100 in FIG. 3 are also applied to the method of FIG. 4 even if the contents are omitted below.

In step 410 , the electronic attack signal transmitting apparatus 100 may start a process of determining the strength of the electronic attack signal for the M objects 110 .

은 m번째 대상체에 송신되는 전자공격 신호의 세기의 상한 값에 해당할 수 있다. 전자공격 신호의 세기는 예를 들어, 전자공격 신호에 대해 할당되는 전력 값에 해당할 수 있다.The electronic attack signal transmitting apparatus 100 may generate an M×N channel matrix H and an N×M beamforming matrix W between the M objects 110 and an unspecified object.

may correspond to the upper limit value of the strength of the electronic attack signal transmitted to the m-th object. The strength of the electronic attack signal may correspond to, for example, a power value allocated to the electronic attack signal.

In step 420, the electronic attack signal transmitting device 100 may initialize the variables.

In step 430 , the electronic attack signal transmitting device 100 may increase the value of n by 1 and enter step 440 .

In steps 440 to 470, the electronic attack signal transmitting apparatus 100 performs a process for determining the strength of the electronic attack signal for each of the objects 110 using an improved iterative multi-level water-filling algorithm. can

In step 480 , the electronic attack signal transmitting apparatus 100 may determine the strength of the electronic attack signal for each of the objects 110 based on the value determined in step 460 .

5 is a graph illustrating a beam pattern of an electronic attack signal and the strength of a signal received from an object as an operation result of the electronic attack signal transmitting apparatus according to an exemplary embodiment.

Referring to FIG. 5, (a) of FIG. 5 shows a beam pattern of an electronic attack signal, and FIGS. 5 (b) and 5 (c) show the strength of an electronic attack signal received by an object.

5, the transmitter 240 includes 64 transmit antennas (N = 64), and the electronic attack signal transmission device 100 uses 30 Watt in a frequency band of 6 GHz (P _T = 30) Thus, the operation was performed on four objects 110 (M = 4) positioned at 10 degrees, 20 degrees, 50 degrees, and 80 degrees, respectively. The electronic attack signal transmission device transmitted the electronic attack signal at a rate of = 10 dB for a 10 degree object, = 1 dB for a 20 degree object, = 0.1 dB for a 50 degree object, and = 7 dB for an 80 degree object.

Figure 5 (a) shows the beam pattern of the electronic attack signal for the entire 360 degree azimuth of the electronic attack signal transmission device when transmitting the electronic attack signal. Figure 5 (b) is a graph showing the strength of the received signal in dB-scale when it is assumed that an arbitrary object receives the signal in all azimuth angles when transmitting the electronic attack signal, and (c) of Figure 5 is the received signal It is a graph showing the intensity in linear-scale. As can be seen in the embodiment according to FIG. 5 , when the electronic attack signal is transmitted to the objects 110 at a corresponding power ratio, it can be confirmed that the electronic attack signal is effectively received by the objects 110 .

6 is a graph illustrating a spectrum of a signal received from an object as a result of an operation of the electronic attack signal transmitting apparatus according to an exemplary embodiment.

Referring to FIG. 6 , (a) of FIG. 6 is a spectrum of a signal received from an object positioned at a 10 degree azimuth, FIG. 6(b) is a spectrum of a signal received from an object positioned at an azimuth of 20 degrees, and FIG. 6 ( c) shows a spectrum of a signal received from an object positioned at an azimuth of 50 degrees, and FIG. 6(d) shows a spectrum of a signal received from an object positioned at an azimuth of 80 degrees.

In the embodiment according to FIG. 6 , the transmitter 240 includes 64 transmit antennas (N = 64), and the electronic attack signal transmission device 100 uses 30 Watt in a frequency band of 6 GHz (P _T = 30) Thus, the operation was performed on four objects 110 (M = 4) positioned at 10 degrees, 20 degrees, 50 degrees, and 80 degrees, respectively. The electronic attack signal transmission device transmitted the electronic attack signal at a rate of = 10 dB for a 10 degree object, = 1 dB for a 20 degree object, = 0.1 dB for a 50 degree object, and = 7 dB for an 80 degree object. Also, each of the objects 110 received a 2FSK signal having a level of about -92 dBm.

If 30Watt of transmit power is distributed according to the dB-scale power ratio of the electronic attack signal for each azimuth of 10:1:0.1:7, the transmit power becomes about 17.35:2.18:1.78:8.69(W), which is the dB-scale power value When converted to , it is 12.39:3.39:2.49:9.39 (dB), and the electronic attack signal transmitting apparatus 100 transmits the electronic attack signal to the objects 110 by using the corresponding power.

Referring to (a) of FIG. 6 , when the electronic attack signal transmitting apparatus 100 transmits an electronic attack signal of 12.39 dB to an object located at an azimuth of 10 degrees, about -92 dBm 2FSK signal (blue spectrum) desired by the object is obtained. It can be confirmed that the object has received an electronic attack signal (red spectrum) of -80 dBm level because it is hidden by the electronic attack signal.

Referring to (b) of FIG. 6 , when the electronic attack signal transmitting apparatus 100 transmits an electronic attack signal of 3.39 dB to an object located at an azimuth of 20 degrees, about -92 dBm 2FSK signal (blue spectrum) desired by the object is an electronic It can be confirmed that the electronic attack signal (red spectrum) of -88 dBm level is received by the object because it is hidden by the attack signal.

Referring to (c) of FIG. 6 , when the electronic attack signal transmission device 100 transmits an electronic attack signal of 2.49 dB to an object located at a 50-degree azimuth, about -92 dBm 2FSK signal (blue spectrum) desired by the object is an electronic It can be confirmed that the electronic attack signal (red spectrum) of about -94 dBm level is received by the object because it is hidden by the attack signal.

Referring to (d) of FIG. 6, when the electronic attack signal transmitting device 100 transmits an electronic attack signal of 9.39 dB to an object located at an 80-degree azimuth, about -92 dBm 2FSK signal (blue spectrum) desired by the object is an electronic It can be confirmed that the electronic attack signal (red spectrum) of about -82dBm level was received by being covered by the attack signal.

7 is a flowchart illustrating a method for transmitting an electronic attack signal according to an embodiment.

Referring to FIG. 7 , the method for transmitting an electronic attack signal includes steps processed in time series by the electronic attack signal transmitting apparatus 100 shown in FIGS. 2 and 3 . Therefore, it can be seen that the above-described contents of the electronic attack signal transmitting apparatus 100 in FIGS. 2 and 3 are also applied to the method of FIG. 7 even if the contents are omitted below.

In step 710 , the electronic attack signal transmitting apparatus 100 may obtain channel information for each of the objects 110 .

The electronic attack signal transmitting apparatus 100 may obtain frequency information and location information for each of the objects 110 . The electronic attack signal transmitting apparatus 100 may obtain phase information for each of the objects 110 based on frequency information and location information. The electronic attack signal transmission device 100 may acquire channel information based on the phase information.

In step 720, the electronic attack signal transmitting apparatus 100 may generate a beamforming matrix based on the channel information.

The electronic attack signal transmitting apparatus 100 may generate a beamforming matrix so that interference between the electronic attack signals to be transmitted to each of the objects 110 does not occur.

After step 720, the electronic attack signal transmitting apparatus 100 may generate a pattern of the electronic attack signal.

In operation 730, the electronic attack signal transmitting apparatus 100 may determine the strength of each of the electronic attack signal to be transmitted to each of the objects 110 based on the channel information and the beamforming matrix.

The electronic attack signal transmission device 100 may determine the strength based on the pattern.

In the electronic attack signal transmitting apparatus 100 , the strength at which one object 111 receives the electronic attack signal 101 transmitted to one object 111 among the objects 110 is maximized, and the objects 110 . The intensity of the electronic attack signal transmitted to each of the remaining objects may be determined such that the intensity of receiving the electronic attack signal by one object 111 is minimized.

The electronic attack signal transmitting apparatus 100 may achieve the maximization and the minimization by using the Lagrange multiplier method.

The electronic attack signal transmission device 100 may determine the strength using an improved iterative multi-level water-filling algorithm.

In operation 740 , the electronic attack signal transmitting apparatus 100 may transmit an electronic attack signal of a determined intensity for each of the objects 110 to each of the objects 110 .

The electronic attack signal transmitting apparatus 100 may improve the performance of transmitting the electronic attack signal by efficiently utilizing the same frequency resource and power.

The present embodiments may be implemented in the form of an application stored in a recording medium readable by an electronic device that stores instructions and data executable by the electronic device. The instructions may be stored in the form of program code, and when executed by the processor, a predetermined program module may be generated to perform a predetermined operation. Further, the instruction, when executed by a processor, may perform certain operations of the disclosed embodiments.

The present embodiments may also be implemented in the form of a recording medium including instructions executable by a computer, such as a program module executed by a computer. Computer-readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, computer-readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, other data in modulated data signals, such as program modules, or other transport mechanisms, and includes any information delivery media.

The description of the present specification described above is for illustration, and those of ordinary skill in the art to which the content of this specification belongs will understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be able Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present embodiment is indicated by the claims to be described later rather than the above detailed description, and it should be construed as including all changes or modifications derived from the meaning and scope of the claims and their equivalents.

Claims (16)

In the electronic attack signal transmission method,
acquiring channel information for each of the objects;
generating a beamforming matrix to prevent interference between the electronic attack signals to be transmitted to each of the objects based on the channel information;
determining the strength of each electronic attack signal to be transmitted to each of the objects based on the channel information and the beamforming matrix; and
Transmitting an electronic attack signal of a determined intensity for each of the objects to each of the objects,
The step of determining the strength of each of the electronic attack signals comprises:
Determine a power value assigned to each of the electronic attack signals to maximize the strength of the electronic attack signal transmitted to one of the objects and minimize the strength of the electronic attack signal transmitted to each of the remaining objects among the objects A method comprising the step of The method of claim 1,
The step of obtaining the channel information includes:
obtaining frequency information and location information for each of the objects;
obtaining phase information for each of the objects based on the frequency information and the location information; and
and obtaining the channel information based on the phase information. delete delete The method of claim 1,
The step of determining the strength of each of the electronic attack signals comprises:
A method of achieving said maximization and said minimization using a Lagrange multiplier method. 6. The method of claim 5,
The step of determining the strength of each of the electronic attack signals comprises:
and determining the intensity using an improved iterative multi-level water-filling algorithm. The method of claim 1,
The method is
Further comprising the step of generating a pattern of the electronic attack signal,
The step of determining the strength of each of the electronic attack signals comprises:
determining the intensity based on the pattern. In the electronic attack signal transmitting device,
a channel information acquisition unit acquiring channel information for each of the objects;
a beamforming matrix generator for generating a beamforming matrix based on the channel information to prevent interference between the electronic attack signals to be transmitted to each of the objects;
a signal strength determiner for determining the strength of each of the electronic attack signals to be transmitted to each of the objects based on the channel information and the beamforming matrix; and
A transmitter for transmitting an electronic attack signal of a determined intensity for each of the objects to each of the objects;
The signal strength determining unit,
Determine the power value assigned to each of the electronic attack signals to maximize the intensity of the electronic attack signal transmitted to one of the objects and minimize the intensity of the electronic attack signal transmitted to each of the remaining objects among the objects An electronic attack signal transmission device. 9. The method of claim 8,
The channel information obtaining unit,
Obtaining frequency information and location information for each of the objects,
obtaining phase information for each of the objects based on the frequency information and the location information,
An electronic attack signal transmitting device for obtaining the channel information based on the phase information. delete delete 9. The method of claim 8,
The signal strength determining unit,
A device for transmitting an electronic attack signal that achieves the maximization and the minimization by using a Lagrange multiplier method. 13. The method of claim 12,
The signal strength determining unit,
An electronic attack signal transmission device for determining the strength using an improved iterative multi-level water-filling algorithm. 9. The method of claim 8,
The device is
Further comprising a signal pattern generator for generating a pattern of the electronic attack signal,
The signal strength determining unit,
Determining the strength based on the pattern, an electronic attack signal transmission device. 9. The method of claim 8,
The transmitter is
An electronic attack signal transmitting device comprising a multi-antenna including a plurality of transmitting antennas for transmitting the electronic attack signal. A computer-readable recording medium in which a program for executing the method of claim 1 in a computer is recorded.

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